Adjustable centering for reinforced-concrete floor construction.



Patented Deu?, im

G. B. WAITE. ADJUSTABLE CENTERING FOR REINFORCED CONCRETE FLOOR CONSTRUCTIO APPLlcAsoN FILED luLY 11.1914. Llgl.

titl

GUY B. WATE, OF NEW YORK, N. Y.

ADJUSTABLE CENTERNG FOR REINFRCED-CONCRETE FLOOR CONSTRUCTON.

Application filed .Tuly 1'?, 1914.

T0 all whom t may concern:

Be it known that l, GUY B. "WAITE, a citizen of the United States, andiresident of the borough of Manhattan, city, county, and State of New York, have invented certain neuT and useful improvements in Adjustable Centerings forRein-forced-Concrete Floor Constructions, of which the follow ing is a specification.

One ot' the main objects of this invention is to provide a centering for concrete Hoor constructionswhich may be readily adjusted longitudinally to the length of the supporting girders and which may be adjusted transversely to adapt it to the spaces between the supporting gir-ders.

Another object of the invention is to provide an adjustable centering which may be manufactured in quantities of standard sizes and lengths and which may be readily assembled and adjusted to supporting girders ot' diilerent lengths and to spaces of varying widths between the girders.

Another object of the invention is to construct the main portions of the centering of light sheet metal channels or troughs which may be adjusted longitudinally when adapting the centering to supporting girders and the space between said girders, said troughs being adapted to be nested or packed one within the other when the centering is dis mantled or cknocked down for convenient transportation and storage.

rthere are other important objects and adn vantages of the invention all of which will more fully hereinafter appear.

n the drawings. Figure l is a sectionalA view of a portion of a reinforced concrete floor showing the centering hung on the supporting gil-ders and the concrete in position therein; Fig. 2 a sectional view on the line Il-I of Fig. l; Fig. 2 a transverse sectional View on thc'line Il--Ha of Fig. 1; Fig. 3 a plan View of the centering carried by the supporting girder; Fig. 4 a detail perspective sectional view of a portion of the centering which is supported on the girder; Fig. 5 a` detail view of one of the loops by which the centering is hung to the supporting girder; Fig. 6 an inverted perspective view of one of the transverse floor supporting members; and Fig. 7 a similar "siieciacauon of Letters raient.

Patented Dec. 7, MM5.

Serial No. 851,435.

the concrete molded `around said girders andA 3 the concrete floor.

To form the mold around each supporting irder employ two sheet metal troughs or c annels e, said troughs being open at their ends. These troughs Aare of any desired or suitable length and to stiti'en the sides and the bottoni thereof, longitudinally extending strengthening strips 5 are secured to the outer side thereof, as shown clearly in Fig. 4t. These strengthening strips are preferably of wood and extending around said reinforcing strips'at suitable points along the length of the trough are straps or yokes 6. The yokes and reinforcing straps are connected to the sheet metal troughs by means of wire loops 7 which are passed through holes in the sides and bottoms of the troughs and twisted around the outer sides of the straps G, as shown clearly in Figs. l and 4. IThese parts are secured together by any suitable means, that shown being twisted wire loops.

The troughs are suspended from the supporting girders by means of double or yokelike loops 8 which are passed over the top of the girders, the arms 8a extending down through apertures in the bottom of the trough as shown clearly in Figs. 1 and 3. Through the lower ends of the arms 8 and below the reinforcing strips 5 on the bottom of thetrough is passed a supporting pin 9, as clearly shown in Fig. l, thetrough resting on said pin and being thereby supported by the loops 8. .its many ot' these loops as are necessary may be used to support the troughs. -When it-isdesired to detach the molds or troughs from the supporting gir-ders it is only necessary to cut the lower ends of the loops 8a, thereby freeing.

the pins 9 after which the entire mold structure may be removed.

In order to adapt the troughs .or molds to any length of supporting girder, extension pieces l0 are used. These extension troughs lll) test that as many of the main sections@` of all! the troughs may be used as are necessary; and that more than one ci the bridge or extension sections l() may be used it it be found necessary' or desirable.

By using the reinforcing strips 5 and the strengthening yoles G very thin sheet metal maybe used for the Amain and extension sections of the troughs or molds. .lt is also manifest that these mold sections may be nested or packed one within the other when they are not in use tor convenieiui'e in transportation and storage. lt is also manifest that the strengthening pieces 5 may he packed within the troughs so that the entire centering structure may be packed within a very small space and convenientlxY transported to the place of use or to a place ot storage.

To bridge the space between the girder centering and te Eorrn the floor W l port l employ the adjustable or extensible floor centering` 1l. I'ihis centering consists ot' two inverted sheet metal channel sections l2 and 13, the section. 't3 sliding within the section 12, as clearly shown in Figs ."2 and E2. The section l2 is approximately twice as long as the section i3 and the latter section is adapted to slide within section l2. cured to the depending side flanges of 'the section 13 are wooden brace pieces le wliic i extend considerably beyond the inner en. section 13 and'project into section 12, as shown clearly in Fig. l. lt-igidiy secured to the section l isa strap or yoke l5 Athe lower end et which projects below' the strengthening strips le. Through. the lower1 ends ot these straps andy in position to engage the lower edges of tbe strengthening 'pieces 1%,- eXterll inciting; eins i6 which serve to lock the two adjustable eectinns tcgetlier. is manifest the weight piaceri upon the to ut 'these interlocking sections will cause the it er end ci the section l?. to bear stro; ly down on, '5g-op of the sectieu l, ereftr preventing any concrete lodging i* titre two sec ions. li.- is also manifest that the two sections may be adjusted to t any space betw'eei'i the sunporting girders, this' being lii'znitefh however, 'to the extreme extension of the two parts or sections outer ends of the sections l2 and 18 of oor centering; are provided with lioolrs which are adapted to be ex'igaged over the strengtheiiing 5, or other support-'ing means carried ef; trough sections or the extension i3 forni supfgiorting :need side by'side, a .i l, between adj oining members which arr suitable spa beu-ig le members. pace is preferably bridged by a flat sb l8r, as "shown me and 13 are metal and when ninie'usions they clearly in Fig. 2. preferably :terme .i adjusted to their sei-tallest. may be readily reo and storage From the foregoing it is manifest that l provide an adi ustable centering' of which the main melilla-rs are 't'ornied ot sheet metal of light construction adapted to he reduced to small dii'nensions tor transportation and storage. lt is also manifest that l provide a centeringwhich is adj ustahle lonnitudinall)v to adapt itfor supportixnry gil-ders ot various lengths; and is also adjustable transversely to adapt it to tit between gil-ders located dit- .terent distances apart. 'ltis also clear that the 1parts of the centering may he manutan tured in standard sizes and these ma)Y be as senibled and adjusted at the place ot use.

The structure shown in the drawings and described herein`r but not claimed. is en] bodied in my copending application Serial No. 851,436, filed January l?, 1914.

What l claim is:

l. A centering for a concrete licor construction comprising a sectional adjustable gir-der centering consisting ot' a pair of Inain trough-like sheet metal inold sections, means for suspending said mold sections from ay girder, a trough-like extension sec tion bridging the space between and sup ported by said main mold sections a sectional. adjustable ioor centering means consisting of two inverted channel sections slidable one within the other to bridge the space between the girder centering, means at the outer ends of said floor channel sections to support said sections on the girder centering7 means for interlocking' the inner ends of the channel sections to support said inner ends.

A centering i'or a concrete floor construction comprising a sectional adjustable gircler centering consisting of a pair of main trough-like sheet metal incid sectionsn means for suspending said mold sections from a girder, al trougirlilre extension section bridging .*ue space between and supported by :aid main mold sections7 a sectional adjustable fioor centering means consisting of two inverted channel seetions slidable one within the other tc'bridge the space between tliegirder centering, means at tie outer en et said channel sections to support said sections on the girder centering, means for interlocking tbe inner ends of the chann nel. sections to support said inner ends, and bridgingvplates extending across the space between the floor centering and supported by said centering.

3; A centering for a concrete floor construction comprising a sectional adjustable girder centering consisting of a pair of trough-like sheet 'metal main mold sections, means for suspending said main sections from a girder, a trouglrliire extension section bridging the space between the main mold sections, longitudinally extending bracing strips on the outer side of each of 'She main, mold sections near the upper edges License thereof, a sectional adjustable tloor centering consisting of twoinverted channel sections slidable one within the other to bridge the space between the girder centering, means at the outer-,ends of these channel vsections to engage the bracing strips on the girder centering to support said door centering, and means for .interlocking the inner ends of the channel sections to support them in proper alinement.

4. A sectional adjustable girder centering for concrete door construction comprising a pair of main trough-like sheet metal mold sections, a series of longitudinally extending bracing strips on the outer side of said sections, a series of reinforcing yokes extendingV around said sections outside of the bracing strips, tyingbands passing through the walls of the mold and securing the bracing strips and the yoles directly to the walls of the mold section, a trough-like extension section bridging the space between and sup ported by the main mold sections.

5. A centering for concrete 'loor construction comprising two inverted sheet metal channel sections adapted to slide on each other, one of said sections carrying reinforcing bars which project into the other section, means carried by the said other section for engaging the said reinforcing bars and thereby interlocking the two sec tions, and means at the outer ends of the slidable channel sections to support said centering.

6. A centering for concrete floor construction comprising sectional adjustable supporting elements consistingof twoinyerted channel sections having a top and depending sides, one of said channel sections fitting and sliding within the other, the inner section having longitudinally extending brace pieces secured to the inner surface of each of its depending angcs, said brace pieces projecting a suitable distance beyond the inner end of the said section, depending arms secured to the under side of the outerl section, pins projecting through said arnis and forming supports for the projecting ends of the brace pieces carried by the other section, and means at the outer end of-each. of said slidable sections for supporting said sections in position.

7. A centeringn for a concrete door con struction comprising a sectional adjustable girder centering consisting of a pair of main trough-like sheet metal mold sections. means for suspending said main mold sections from a girder, a trough-like extension section bridging the space' between and supported by said inain mold sections, a sectional Hoor construction comprising two sheet metal channel sections adapted to slide on each other, one of said sections carrying reinforcing bars projecting into the other section, means carried by the said other section for engaging the said-reinforcing bars and thereby interlocking the two sec tions, and means at the outer ends et' the slidable sections of thefioor centering to vengage the girder centering whereby the i floor centering will be supported from the girder centering.

8. A girder centering comprising a pair of main trough-like sheet metal mold sections, a series of longitudinally extending bracing strips on the outer side of each of said main mold sections, a reinforcing yoke around said mold section outside of the bracing strips, ties passing through the walls of the mold and securing the rein- 50 forcing strips and the reinforcing yokes directly to the mold, loops adapted to be suspended from a girder and to pass through the bottom of the main mold sections, supporting pins passing through said loops be- 85.

low the mold sections, and a troughlike eX- tension section bridging the space between and supported by the main mold sections.

lin testimony whereof I hereunto aiiizr my signature in the presence oi two witnesses. 9@

GUY B. WATE. n Witnesses:

LILLEAN MCGUIRE, MINERVA VAN ALEN. 

